storage_proxy: drop virtual from signal(gms::inet_address)
storage_proxy: drop virtual from signal(gms::inet_address)

The function is not overridden, so should not be virtual.

scylladb/scylla,duarten/scylla,avikivity/scylla,duarten/scylla,avikivity/scylla,scylladb/scylla,duarten/scylla,scylladb/scylla,scylladb/scylla,avikivity/scylla